Home / 67,318.07-100,928.50-20,545.43

Finding the Fourth Proportional to 67,318.07, 100,928.50 and 20,545.43

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Solution

The fourth proportional to 67,318.07, 100,928.50 and 20,545.43 is: 30,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,318.07 : 100,928.50 = 20,545.43 : x
  2. Step 2: Convert to fraction form
    67,318.07/100,928.50 = 20,545.43/x
  3. Step 3: Cross multiply
    67,318.07x = 100,928.50 × 20,545.43
  4. Step 4: Simplify right side
    67,318.07x = 2,073,619,431.76
  5. Step 5: Solve for x
    x = 2,073,619,431.76/67,318.07
  6. Step 6: Final answer
    x = 30,803.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.